Compressor and refrigeration apparatus

ABSTRACT

A compressor and a refrigeration apparatus are provided. The housing of the compressor has a first terminal and a second terminal. The motor of the compressor has a stator, a first line group and a second line group. The first line group extends from a first position of an end face of the stator and is connected to the first terminal. The second line group extends from a second position of the end face and is connected to the second terminal. A midpoint between the first position and the second position defines a middle point. A plane passing through the middle point and an axis of an output shaft of the motor is defined as a middle plane. The first terminal and the first position are at one side of the middle plane. The second terminal and the second position are at the other side of the middle plane.

CROSS-REFERENCES TO RELATED APPLICATION

The present application is a continuation of PCT International Application No. PCT/CN2018/102030, filed on Aug. 23, 2018, which claims the priority of Chinese Patent Application No. 201820007106.8, filed with the Chinese Patent Office on Jan. 3, 2018 and entitled “COMPRESSOR AND REFRIGERATION APPARATUS”, the entire contents of which are herein incorporated by reference for all purposes. No new matter has been introduced.

FIELD

The present disclosure relates to the field of compressors, and particularly relates to a compressor and a refrigeration apparatus.

BACKGROUND

In order to achieve efficient operation of the compressor in the entire frequency band, the winding switching technology has become a hot spot in the industry in recent years.

In connection relationship between the connecting posts of the compressor and the motor lines, the motor extension lines position for general use and the motor extension lines position for winding switching are usually different. If only the previous connection method is used, as shown in FIG. 1, frequently, there are problems such as interlacing or winding of the lines, or position conflicts between lines and components, which not only affects the performance of the compressor, but also easily creates security risks. Therefore, the connecting terminal structure and position of winding switching applications need to be optimized with the compressor motor.

SUMMARY

In order to solve at least one of the above-mentioned technical problems, the embodiment of the first aspect of the present disclosure provides a compressor.

The embodiment of the second aspect of the present disclosure provides a refrigeration apparatus.

In view of this, according to the embodiment of the first aspect of the present disclosure, the present disclosure provides a compressor, comprising: a housing, being provided with a first connecting terminal and a second connecting terminal; and a motor, being set in the housing. The motor comprises a stator, a first line group and a second line group, the first line group comprises a plurality of first extension lines, the second line group comprises a plurality of second extension lines, the first line group extends from a first position of an end face of the stator and is connected to the first connecting terminal, and the second line group extends from a second position of an end face of the stator and is connected to the second connecting terminal. A midpoint of the connection between the first position and the second position is defined as a middle point, a plane passing through the middle point and an axis of an output shaft of the motor is defined as middle plane, the first connecting terminal and the first position are located at one side of the middle plane, and the second connecting terminal and the second position are located at the other side of the middle plane.

According to the compressor provided by the present disclosure, by setting the first connecting terminal and the first line group at one side of the middle plane and setting the second connecting terminal and the second line group at the other side of the middle plane, the intersection or entanglement of the first line group and the second line group can be avoided, a sufficient safety distance between different extension lines and between the extension lines and the other conductive parts can be ensured, high reliability can be provided, and the security risks caused by the extension lines interleaving or overlapping each other can be eliminated. At the same time, compared with the previous design structure, the number of the connecting terminals is reduced, the installation structure is simplified, and it is easy to manufacture and install. It also improves the assembly and manufacturability of the extension lines and the connecting terminal, and is conducive to improving the manufacturing efficiency of the product. It also makes the winding switching of the motor in the compressor easier to achieve.

In addition, the compressor in the above-mentioned embodiment provided by the present disclosure may also have the following additional technical features.

In the above-mentioned technical solution, optionally, the first connecting terminal comprises a plurality of first connecting posts, and the plurality of first extension lines are respectively connected to the plurality of first connecting posts; the second connecting terminal comprises a plurality of second connecting posts, and the plurality of second extension lines are respectively connected to the plurality of second connecting posts.

Optionally, the first connecting terminal comprises the plurality of first connecting posts, the plurality of first extension lines are connected to the plurality of first connecting posts in sequence, to achieve the connection between the extension lines and the connecting terminal, and at the same time, it can also choose the appropriate connection sequence according to specific design needs, to avoid the intersection or entanglement between the plurality of first extension lines. Similarly, the second connecting terminal and the second extension lines are also connected in sequence.

Optionally, the number of the first extension lines is three, and the number of the second extension lines is three; the number of the first connecting posts is three, and the number of the second connecting posts is three.

Optionally, the number of the first extension lines is three, and the number of the second extension lines is three, which can be applied to three-phase motors. The compressor using three-phase motors has a simple structure, reliable operation stability, and strong versatility.

Optionally, three of the first connecting posts are parallel to each other and a distance between every two of the first connecting posts is equal; three of the second connecting posts are parallel to each other and a distance between every two of the second connecting posts is equal.

Optionally, three of the first connecting posts are parallel to each other and a distance between every two of the first connecting posts is equal, which is equivalent to the connection between three of the first connecting posts on the same plane forming an equilateral triangle. This is conducive to improving the structural strength of the first connecting terminal, and it is also convenient for connecting the connecting posts. The second connecting posts also use the same arrangement as the first connecting posts.

Optionally, the number of the first extension lines is equal to the number of the second extension lines.

Optionally, in the motor, the number of the first extension lines is equal to the number of the second extension lines. The first extension lines and the second extension lines are located at either side of the motor, respectively, to avoid intersection or entanglement between each extension lines after the extension lines and the connecting terminal are connected.

Optionally, the compressor further comprises: a first socket, wherein the first line group is connected to the first socket and the first socket is plugged on the plurality of first connecting posts; and a second socket, wherein the second line group is connected to the second socket and the second socket is plugged on the plurality of second connecting posts.

Optionally, the first line group is connected with the first socket, and then the first socket is plugged in the first connecting terminal, so that the first line group and the first connecting terminal can achieve a stable and reliable connection. At the same time, directly inserting the socket into the connecting terminal realizes the connection between the first line group and the first connecting terminal. Thus, the process of assembling the compressor can be simplified. It also improves the manufacturing efficiency of the compressor, and facilitates the later disassembly and maintenance.

Optionally, the motor is a permanent magnet motor.

Optionally, the motor used in the compressor is a permanent magnet motor. The structure of the permanent magnet motor is simple and the work is stable. It is suitable for most compressors. At the same time, the permanent magnet motor with the above-mentioned structure is convenient for winding switching, which is conducive to achieving efficient operation of the compressor in the entire frequency band.

Optionally, the motor further comprises a rotor, and the rotor is disposed in the stator; wherein the permanent magnet of the rotor is a rare earth permanent magnet or a ferrite permanent magnet, and the permanent magnet is a plate-shaped permanent magnet or a tile-shaped permanent magnet.

Optionally, the permanent magnet of the rotor can choose to use a rare earth permanent magnet or a ferrite permanent magnet, and the structure of the permanent magnet is a plate-shaped structure or a tile-shaped structure, which is convenient for the arrangement and assembly of the permanent magnet, and at the same time, it is also conducive to improving the magnetism of the permanent magnet and the working efficiency of the compressor.

The refrigeration apparatus in the above-mentioned embodiment, provided by the second aspect of the present disclosure, comprises the compressor of the embodiment of the first aspect.

The refrigeration apparatus provided by the present disclosure, by using the above-mentioned compressor, it avoids the intersection or entanglement of the extension lines in the compressor, guarantees a sufficient safety distance between the extension lines, the extension lines and the other conductive parts, provides high reliability, and eliminates the security risks caused by the extension lines interleaving or overlapping each other. At the same time, compared with the previous design structure, the number of the connecting terminals is reduced, the installation structure is simplified, and it is easy to manufacture and install. It also improves the assembly and manufacturability of the extension lines and the connecting terminal, and is conducive to improving the manufacturing efficiency of the product. It also makes the winding switching of the motor in the compressor easier to achieve.

Optionally, the refrigeration apparatus is a refrigerator or an air conditioner.

Optionally, the refrigeration apparatus is a refrigerator or an air conditioner, the refrigerator or the air conditioner can use the above-mentioned compressor to reduce the security risks caused by interleaved or overlapped lines in the compressor, and can also improve the production efficiency of the product.

Additional aspects and advantages of the present disclosure will become apparent in the following description, or are understood by the practice of the present disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and/or additional aspects and advantages of the present disclosure will become apparent and readily understood from the following description of embodiments in conjunction with the drawings.

FIG. 1 is a schematic diagram of connection between an upper housing assembly of a compressor and extension lines of a motor in the related art;

FIG. 2 is a schematic structural diagram of an embodiment of the present disclosure;

FIG. 3 is an assembly diagram of the structure shown in FIG. 2;

FIG. 4 is a schematic structural diagram of the motor shown in FIG. 2;

FIG. 5 is a top view of the structure shown in FIG. 2;

FIG. 6 is a partial cross-sectional view of an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a rotor in an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of a rotor in an embodiment of the present disclosure;

FIG. 9 is a schematic diagram of a connection relationship of a compressor in an embodiment of the present disclosure;

The corresponding relationship between the reference signs and component names in FIG. 1 to FIG. 9 are as follows:

1: housing, 12: first connecting terminal, 122: first connecting posts, 14: second connecting terminal, 142: second connecting posts, 2: motor, 202: stator, 204: first extension lines, 206: second extension lines, 208: rotor, 2082: permanent magnet, 302: first socket, 304: second socket, 402: crankshaft, 404: main bearing, 406: cylinder, 408: piston, 410: secondary bearing, 412: exhaust pipe.

DETAILED DESCRIPTION OF EMBODIMENTS

In order that the above-mentioned objectives, features and advantages of the present disclosure can be understood more clearly, a further detailed description of the present disclosure will be given below in connection with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other if there is no conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure. However, the present disclosure can also be implemented in other manners than those described herein. Therefore, the protection scope of the present disclosure is not limited to the specific embodiments disclosed below.

The compressor and the refrigeration apparatus according to some embodiments of the present disclosure are described below with reference to FIGS. 2 to 9.

As shown in FIGS. 2 to 6, the present disclosure provides a compressor, comprising: a housing 1, being provided with a first connecting terminal 12 and a second connecting terminal 14; and a motor 2, being set in the housing 1. The motor 2 comprises a stator 202, a first line group and a second line group. The first line group comprises a plurality of first extension lines 204, the second line group comprises a plurality of second extension lines 206, the first line group is connected to and extends from a first position of an end face of the stator 202. The first line group is connected to the first connecting terminal 12. The second line group is connected to and extends from a second position of an end face of the stator 202. The second line group is connected to the second connecting terminal 14. A midpoint between the first position and the second position (i.e., the midpoint of the line connecting the first position and the second position) is defined as a middle point. A plane passing through the middle point and an axis of an output shaft of the motor 2 is defined as middle plane. The first connecting terminal 12 and the first position are located at one side of the middle plane, and the second connecting terminal 14 and the second position are located at the other side of the middle plane.

By setting the first connecting terminal 12 and the first line group at one side of the middle plane and setting the second connecting terminal 14 and the second line group at the other side of the middle plane, the compressor provided by the present disclosure is capable of avoiding the intersection or entanglement of the first line group and the second line group, ensuring a sufficient safety distance between different extension lines and between the extension lines and the other conductive parts, providing high reliability, and eliminating the security risks caused by the extension lines interleaving or overlapping each other. At the same time, compared with the previous design structure, the number of the connecting terminals is reduced, the installation structure is simplified, and it is easy to manufacture and install the compressor. It also improves the assembly and manufacturability of the extension lines and the connecting terminal, and is conducive to improving the manufacturing efficiency of the product. It also makes the winding switching of the motor 2 in the compressor easier to achieve.

In the embodiment, specifically, as shown in FIG. 4, the first line group extends from the first position of the end face of the stator 202, and the second line group extends from the second position of an end face of the stator 202. A point A is set at the first position, a point B is set at the second position, and a midpoint between A and B is point C, a plane M is determined via the point C and a rotation axis of the compressor and its motor 2, thereby setting the first line group and the second line group at either side of the plane M and setting the first connecting terminal 12 and the second connecting terminal 14 at either side of the plane M. This configuration is capable of avoiding lines crossover or overlapping, which is also convenient for the subsequent implementation of the star triangle switching for motor 2. The point A can be any point within a suitable range of the first position, and the point B can be any point within a suitable range of the second position. The connector of the line group can be provided with a metal insert to connect with the connecting posts; alternatively, the connector of the winding is connected to the extension lines assembly, and subsequently connected to the connecting posts through the extension lines assembly.

In a compressor in the related art shown in FIG. 1, two connecting terminals are located at the same side and are thus too close, two sets of the extension lines cross each other, and a set of the extension lines cross the exhaust pipe. This configuration causes insufficient electrical distance, and at the same time, also causes difficulties in the manufacturing process. The compressor provided by the present disclosure, as shown in FIG. 3, can avoid the intersection between the extension lines and the intersection between the extension lines and the exhaust pipe 412, and thus avoid the entanglement between different extension lines. The safety distance between the components in the compressor is ensured, making the wiring in the compressor safer and more reasonable. The exhaust pipe and the housing outside the motor are not shown in FIG. 2.

In one embodiment of the present disclosure, optionally, as shown in FIGS. 2, 3, 5 and 6, the first connecting terminal 12 comprises a plurality of first connecting posts 122. The plurality of first extension lines 204 and the first connecting posts 122 are connected. The second connecting terminal 14 comprises a plurality of second connecting posts 142. The plurality of second extension lines 206 and the plurality of second connecting posts 142 are connected respectively.

In the embodiment, the plurality of first extension lines 204 are sequentially connected to the plurality of first connecting posts 122, to realize the connection between the extension lines and the connecting terminal, and at the same time, it can also be designed according to the specific needs to choose a suitable connection sequence, to avoid the intersection or entanglement between the plurality of first extension lines 204. Similarly, the second connecting terminal 14 and the second extension lines 206 are also connected in sequence. The number of the first connecting posts 122 and the second connecting posts 142 can be set based on the actual needs, such as two, three, four or more.

In one embodiment of the present disclosure, optionally, as shown in FIGS. 2, 3, and 5, the number of first extension lines 204 is three, and the number of second extension lines 206 is three; the number of first connecting posts 122 is three, the number of second connecting posts 142 is three.

In the embodiment, the number of first extension lines 204 is three, and the number of second extension lines 206 is three, which can be applied to three-phase motor 2. The compressor using three-phase motor 2 has a simple structure, reliable operation stability, and strong versatility.

In one embodiment of the present disclosure, optionally, as shown in FIGS. 2, 3, and 5, three of the first connecting posts 122 are parallel to each other and the distances between every two of the first connecting posts 122 are equal; three of the second connecting posts 142 are parallel to each other and the distances between every two of the connecting posts 142 are equal.

In the embodiment, three of the first connecting posts 122 are parallel to each other and the distances between every two of the first connecting posts 122 are equal, which is equivalent to the connection between three of the first connecting posts 122 on the same plane forming an equilateral triangle. This is conducive to improving the structural strength of the first connecting terminal 12, and it is also convenient for connecting the connecting posts. The second connecting posts 142 also use the same arrangement as the first connecting posts 122.

In one embodiment of the present disclosure, optionally, the number of first extension lines 204 is equal to the number of second extension lines 206.

In the embodiment, the number of first extension lines 204 is equal to the number of second extension lines 206 in motor 2. The first extension lines 204 and the second extension lines 206 are located at either side of the motor 2, respectively, to avoid intersection or entanglement between each extension lines after the extension lines and the connecting terminal are connected.

In an embodiment of the present disclosure, optionally, as shown in FIG. 4, the compressor further comprising a first socket 302 and a second socket 304. The first line group is connected to the first socket 302, and the first socket 302 is plugged on the plurality of first connecting posts 122. The second line group is connected to the second socket 304, and the second socket 304 is plugged on a plurality of second connecting posts 142.

In the embodiment, the first line group is first connected with the first socket 302, and then the first socket 302 is plugged in the first connecting terminal 12, so that the first line group and the first connecting terminal 12 can achieve a stable and reliable connection. At the same time, the process of assembling the compressor can be simplified by directly inserting the socket into the connecting terminal to realize the connection between the first line group and the first connecting terminal 12. It improves the manufacturing efficiency of the compressor, and also facilitates the future disassembly and maintenance.

In an embodiment of the present disclosure, optionally, motor 2 is a permanent magnet motor.

In the embodiment, the motor 2 used in the compressor is a permanent magnet motor. The structure of the permanent magnet motor is simple and the work is stable. It is suitable for most compressors. At the same time, the permanent magnet motor with the above-mentioned structure is convenient for winding switching, which is conducive to achieving efficient operation of the compressor in the entire frequency band.

In an embodiment of the present disclosure, optionally, as shown in FIGS. 4, 7, and 8, the motor 2 further comprises a rotor 208, and the rotor 208 is disposed in the stator 202. The permanent magnet 2082 of the rotor 208 is a rare earth permanent magnet or a ferrite permanent magnet, and the permanent magnet 2082 is a plate-shaped permanent magnet or a tile-shaped permanent magnet.

In the embodiment, the permanent magnet 2082 of the rotor 208 can choose to use a rare earth permanent magnet or a ferrite permanent magnet, and the structure of the permanent magnet 2082 is a plate-shaped structure (as shown in FIG. 7) or a tile-shaped structure (as shown in FIG. 8), which is convenient for the arrangement and assembly of the permanent magnet 2082, and at the same time, it is also conducive to improving the magnetism of the permanent magnet 2082 and the working efficiency of the compressor. The permanent magnet 2082 can be installed in the core slot provided in the rotor 208, and correspondingly, the winding of the stator 202 can be set on the core of the stator 202.

As shown in FIGS. 3, 5 and 6, the compressor also comprises an exhaust pipe 412 and a compression part. The exhaust pipe 412 is used for exhaust, and the first line group and the second line group do not cross the exhaust pipe 412, thereby leaving a sufficient safety distance. The compression part comprises a crankshaft 402, a main bearing 404, a cylinder 406, a piston 408, a secondary bearing 410 and other structures. The crankshaft 402 is connected to the rotor 208 and drives the piston 408 in the compression part to compress the gas. In addition, the housing 1 can also be divided into an upper housing, a lower housing and a main housing, through the sealing cooperation of the upper housing, the lower housing and the main housing, to form a sealed cavity of the compressor.

The present disclosure also provides a refrigeration apparatus, comprising the compressor of the embodiment of the first aspect embodiment.

The refrigeration apparatus provided by the present disclosure, avoids the intersection or entanglement of the extension lines in the compressor by using the above-mentioned compressor, guarantees a sufficient safety distance between different extension lines and between the extension lines and other conductive parts, and provides high reliability. At the same time, compared with the previous design structure, the number of the connecting terminals is reduced, the installation structure is simplified, and it is easy to manufacture and install. It also improves the assembly and manufacturability of the extension lines and the connecting terminal, and is conducive to improving the manufacturing efficiency of the product. It also makes the winding switching of the motor in the compressor easier to achieve.

In an embodiment of the present disclosure, optionally, the refrigeration apparatus is a refrigerator or an air conditioner.

In the embodiment, the refrigeration apparatus is a refrigerator or an air conditioner, the refrigerators or the air conditioners can use the above-mentioned compressor to reduce the security risks caused by interleaved or overlapped lines in the compressor, and can also improve the production efficiency of the product.

In an embodiment of the present disclosure, optionally, as shown in FIG. 9, a frequency converter is connected to the power supply. The frequency converter is also connected to the compressor and supplies power to the compressor. A switch is provided in the circuit connecting the frequency converter and the compressor, which is used to switch the winding connection mode of motor 2 in the compressor, such as realizing the conversion of star connection and triangle connection. By using the above-mentioned compressor, switching the winding of the motor can be facilitated.

In the present disclosure, the term “a plurality of” refers to two or more, unless otherwise clearly defined. The terms “mounting”, “connected” “connection”, “fixing” and the like should be understood in a broad sense. For example, “connection” may be a fixed connection, a removable connection or an integral connection; and “connected” may also refer to directly connected or indirectly connected through an intermediary. A person of ordinary skills in the art could understand the specific meaning of the terms in the present disclosure according to specific situations.

In the description of the present specification, the descriptions of the terms “one embodiment”, “some embodiments” and “specific embodiments” and the like mean that specific features, structures, materials or characteristics described in conjunction with the embodiment(s) or example(s) are comprised in at least one embodiment or example of the present disclosure. In the specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the particular features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

The descriptions above are only preferred embodiments of the present disclosure, which are not used to limit the present disclosure. For a person skilled in the art, the present disclosure may have various changes and variations. Any modifications, equivalent substitutions, improvements etc. within the spirit and principle of the present disclosure shall all be comprised in the protection scope of the present disclosure. 

What is claimed is:
 1. A compressor comprising: a housing comprising a first connecting terminal and a second connecting terminal; and a motor provided in the housing, wherein: the motor comprises a stator, a first line group and a second line group, the first line group comprises a plurality of first extension lines, and the second line group comprises a plurality of second extension lines, the first line group extends from a first position of an end face of the stator and is connected to the first connecting terminal, and the second line group extends from a second position of the end face of the stator and is connected to the second connecting terminal; wherein a midpoint between the first position and the second position is defined as a middle point, a plane passing through the middle point and an axis of an output shaft of the motor is defined as a middle plane, the first connecting terminal and the first position are positioned at one side of the middle plane, and the second connecting terminal and the second position are positioned at the other side of the middle plane.
 2. The compressor according to claim 1, wherein: the first connecting terminal comprises a plurality of first connecting posts, and the plurality of first extension lines are respectively connected to the plurality of first connecting posts; and the second connecting terminal comprises a plurality of second connecting posts, and the plurality of second extension lines are respectively connected to the plurality of second connecting posts.
 3. The compressor according to claim 2, wherein: the plurality of first extension lines comprise three first extension lines, and the plurality of second extension lines comprise three second extension lines; and the plurality of first connecting posts comprise three first connecting posts, and the plurality of second connecting posts comprise three second connecting posts.
 4. The compressor according to claim 3, wherein: the three first connecting posts are parallel to each other and the distances between every two of the three first connecting posts are equal to each other; and the three second connecting posts are parallel to each other and the distances between every two of the three second connecting posts are equal to each other.
 5. The compressor according to claim 1, wherein the number of the plurality of first extension lines is equal to the number of the plurality of second extension lines.
 6. The compressor according to claim 2, further comprising: a first socket, wherein the first line group is connected to the first socket, and the first socket is plugged on the plurality of first connecting posts; and a second socket, wherein the second line group is connected to the second socket, and the second socket is plugged on the plurality of second connecting posts.
 7. The compressor according to claim 1, wherein the motor comprises a permanent magnet motor.
 8. The compressor according to claim 1, wherein: the motor further comprises a rotor disposed in the stator; and the rotor comprises a permanent magnet, wherein the permanent magnet comprises a rare earth permanent magnet or a ferrite permanent magnet, and the permanent magnet comprises a plate-shaped permanent magnet or a tile-shaped permanent magnet.
 9. A refrigeration apparatus comprising: the compressor according to claim
 1. 10. The refrigeration apparatus according to claim 9, wherein the refrigeration apparatus comprises a refrigerator or an air conditioner. 